The first "definitive" tibute to Ozzy Osbourne's 40-year reign as the Prince of Darkness over the ever-thriving heavy metal genre he helped invent. Features rock and metal superstars and many of the hottest rock and metal bands on the rise from around the globe covering Ozzy's BLACK SABBATH and entire solo catalog performed in full-length, hit by hit chronological order over the course of a three-CD set.